"It is good for me that I was afflicted, that I might learn your statutes." (Psalm 119:71)
Ian's coma is good thing. Ian's wreck was a good thing. The difficulty that we are going through is a good thing. Anything that points us to Christ can only be a benefit. It may not seem like it, but we can confidently declare with the Psalmist, "it is good that I am afflicted, that I may know you better!"
We've seen God in ways we never would have imagined. We've been given the amazing opportunity to learn to rely on and trust in God's character like we couldn't have otherwise. We have a greater reason to pray more fervently. We've gained a greater appreciation for Christ's church. We've seen God's care for us. We've seen several thousand (literally!) people pray to our God. Through this very trying time, we've come to know God to a greater degree.
Although we don't always see it, we know that God is working this for our good. We have a great Savior who shows himself greater through hard times. Keep praying to this God of surpassing worth!
See also: Psalm 119:36-37, Romans 8:28